Wire-drawing block



Sept 4, H9Z8 J. S. PHIFER WIRE DRAWING BLOCK Filed July 30, 1924 2sheets-sheet 1 sept. 4, 1928. 1,683,482

J. S. PHIFER WIRE DRAWING BLOCK Filed July 5o, 1924 2 sheets-sheet v2-Patented Sept, el, 128i.

nutren stares Parleur ortica.,

JAMES ST'IART PRIMER, DE' ALLENTGWN, PENNSYLVANIA, ASSIGNOR T0 THEAMERI- CAN' STEEL AND WKRE COMPANY OF NEW'JERSEY, A CORPURATION 0F NEWd' 1ER- SEY.

Application led July 30,

' 'llhis invention relates to wire drawing blocks and while not limitedthereto relates more particularly to wire drawing bloc-ks for continuouswire drawing benches, having means for permitting the withdrawal of thewire accumulated on said blocks at s eeds dierent from the peripheralspeeds o said blocks, and has for its object the provision of animproved means for maintaining a 1o tension upon the wire accumulated onthe blocks.

Another object is to provide a wire drawing block having the noveldesign, construction, and combination ot'parts hereinafter 15',described and illustrated in the accompanyin drawings.

n the drawingsa Figure 1 is a side elevation of a portion of a wiredrawing bench equipped with the improved drawing blocks of thisinvention.

Figure 2 is a top plan thereof.

Figure 3 is an end elevation thereof.

Figure d' is `an enlar ed detail sectional nelevation on the line l lVot Figure 5.

Figure 5 is a plan of the u per end o lthe drawing block, showing theriction ring in osition.

eferring more particularly to the drawings, the letter A. designates thedrawing bench, which may 'be of any desirable construction, havingmounted thereon a plurality oit drawing blocks B and die holders orboxes C.

The drawing blocks B are rotatabl mounted in suitable bearings on thebenc and may be rotated by any suitable mechanism. (not shown). lach ofthe blocks B comprises a drum portion 2 adapted to receive a sucientnumber of convolutions to cause the tractive edort ot the block to drawthe wire through the preceding die, and having a reel-like extension hto receive the accumulation ot 'wire on the-blocks. The reel-likeextension 172 is composed of upstanding arms 3, which have their upperends bent inwardly at right angles as at d to form supports for aretalning r1m or ring 5. The rim or ring 5 is cut away around itsperiphery 'forming an odset, and a circular ringlihe plate 6 is mountedon to oir the rim 5 and extends over the odset formed in thewien-DRAWING haben.

wat. serial no. 729,109.

outer periphery of the rim V5, thus forming agroove 8.

rllhe rim 5 and plate 6 are removably secured together and to the arms 3by -bolts 9 and vscrews 9a, so that when desired to remove the ,plate 6it is only necessary to unscrew the bolts 9 and screws 9a out of theplate 6 and then lift the plate from position. A one piece continuousfriction rmg 10 is mountedl in the groove 8 and co-operates therewith toform a friction retard for the wire being drawn from the block.

rlhe ring l0 is of a materially greater internal diameter than thelgreatest distance cent its upper end. Illhe sleeve 14 is held togetherand clamped in position by bolts 15 and is adjustable around thestandard 12. rlhe arm 13 is provided with circular bearing member 16 atits free end, in which is rotatably mounted a guide bell 17. An arm 18extends upwardly from one side of the bell 17 and carries a guide sheave19.

rllhe wire from the block B is passed under the ring 10. rllhat is,between the ring and bloch and then through the Ouide bell 17' and overthe sheave 19, so that the wire leaves the blocky by uncoiling2 asdistinguished from unwinding, whlch is the method of taking the wirefrom the ordinaryvblocks in use heretofore, and the ring-` l0 serves toretard the passage of the wire sulciently to prevent the wireaccumulated on the bloclrfrom slipping 0E the same, and

also to cause a sufficient tension on the wire to causel it to remaintaut on the kguide sheaves.y

The die holders or boxes are each provide with a guide sheave 20 adaptedto receive the giire from the sheave 19 and guide it to the tiallyaxially of the block.

The tension or braking ring l() serves to keep the wire leaving theblocks taut and also to prevent the uncoiling of the wire on the blocks.y

As the wire is uncoiled from the blocks due to the demand of the nextsucceeding block being greaterI than the preceding block can normallydeliver, there occurs a relative backward peripheral movement of thepoint where the tension or braking acti/on of the ring 10 is eHective.Therefore, the ring is caused to move relative to the block. However,when the demand of the succeeding blo-ck is less than the delivery ofthe preceding block, the ring 10 Will remain stationary and move withthe block due to its frictional engagement therewith.

While I have shown only one specific form of my invention, I do not wishto be limited thereto, slnce various modifications may be andterminating in a retaining rim, said rim being cut away around itsperipheryto form an offset, the base portion of said offset portionhaving its outer edge rounded, a circular ring-like plate secured to theupper face of said retaining rim and projecting outwardly over the baseportion of said oil?- set portion to form a groove, a one-piececontinuous rigid ring mounted in said groove, said ring being of roundcross-Section and having a materially greater internal diameter than thegreatest distance bet-Ween two dametrically opposite points on the backwall of said groove, and of a less internal diameter than the greatestdistance between two diametrically opposite points on the outerperiphery of said retaining rim, said ring being adapted to befrictionally rotated with said block and being'free to move relative tosaid block in an eccentric path, and the wire being withdrawn from saidblock being passed between said ring and said re-V taining rim.

In testimony whereof, I have hereunto set my hand.

JAMES STUART PHIFEP..

